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| ADVANCED LINEAR DEVICES, INC. ALD4303A/ALD4303 QUAD PRECISION MICROPOWER CMOS VOLTAGE COMPARATOR WITH DRIVER GENERAL DESCRIPTION The ALD4303A/ALD4303 is a precision monolithic high performance quad voltage comparator with open drain output built with advanced silicon gate CMOS technology. It features very high typical input impedance of 1012; low input bias current of 10pA; very low power dissipation of 7.5A per comparator; micropower operation; high output drive and single (+5V) or dual (5V) power supply operation. FEATURES * * * * * * * 3V, 5V and 12V supply Guaranteed to drive 200 loads Fanout of 30LS TTL loads Guaranteed maximum supply current of 22A per comparator Industry standard pinout of LM393 type Extremely low input bias currents -- 10pA Virtually eliminates source impedance effects Single (+5V) and dual supply (5V) operation CMOS, NMOS and TTL compatible Open drain wired-OR outputs Compatible with push-pull outputs High output sinking current -- 60mA Low supply current spikes High gain -- 100V/mV The input voltage range includes ground, making this comparator ideal for single supply low level signal detection with high source impedance. * The ALD4303A/ALD4303 can be used in connection with other voltage * comparator circuits such as the ALD2301/ALD2302/ALD4302 voltage * comparators. The outputs can be connected to a higher external * voltage than V+ and used in a wired-OR connection with other open * drain circuits such as ALD2301/ALD2303. They can also be used with * push-pull output types such as ALD2302/ALD4302 voltage compara* tors simultaneously with open drain comparators using a common V+. The ALD4303A/ALD4303 is ideal for a great variety of voltage com- PIN CONFIGURATION parator applications, especially micropower detection circuits requiring very low input currents, high output currents and low standby power. 02 1 APPLICATIONS * * * * * * * * * * * * Sensor detection circuits PCMCIA instruments MOSFET driver High source impedance voltage comparison circuits Multiple limit window comparator Power supply voltage monitor Photodetector sensor circuit High speed LED driver Oscillators Battery operated instruments Remote signal detection Multiple relay drivers 01 V+ -IN 1 +IN 1 -IN 2 +IN 2 2 14 03 04 GND +IN 4 -IN 4 +IN 3 -IN 3 13 3 4 12 11 5 10 6 9 7 8 DB, PB, SB PACKAGE BLOCK DIAGRAM BENEFITS * Extremely low power and high precision combination * Built-in high input impedance buffer * Built-in output driver with up to 60mA sink current ORDERING INFORMATION Operating Temperature Range * -55C to +125C 0C to +70C 0C to +70C 14-Pin CERDIP Package ALD4303ADB ALD4303DB 14-Pin Small Outline Package (SOIC) ALD4303ASB ALD4303SB 14-Pin Plastic Dip Package ALD4303APB ALD4303PB INVERTING INPUT - IN 1 (4) NONINVERTING INPUT + IN 1 (5) INVERTING INPUT - IN 2 (6) NONINVERTING INPUT + IN 2 (7) INVERTING INPUT - IN 3 (8) NONINVERTING INPUT + IN 3 (9) INVERTING INPUT - IN 4 (10) NONINVERTING INPUT + IN 4 (11) V+ (3) (2) OUT 1 + (1) OUT 2 + (14) OUT 3 + (13) OUT 4 + * Contact factory for industrial temperature range (12) (c) 2005 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com ABSOLUTE MAXIMUM RATINGS Supply voltage, V+ Differential input voltage range Power dissipation Operating temperature range PB, SB package DB package Storage temperature range Lead temperature, 10 seconds 13.2V -0.3V to V+ +0.3V 600 mW 0C to +70C -55C to +125C -65C to +150C +260C OPERATING ELECTRICAL CHARACTERISTICS T A = 25C V+= +5V unless otherwise specified 4303A Parameter Voltage Supply Supply Current Voltage Gain Input Offset Voltage Input Offset Current 1 Input Bias Current 1 Common Mode Input Voltage Range 2 Low Level Output Voltage Low Level Output Current High Level Leakage Current Response Time 2 Symbol VS V+ IS Min 1.5 3 50 Typ Max 6 12 90 Min 1.5 3 50 4303 Typ Max 6 12 90 Unit V V A Test Conditions Dual Supplies Single Supply RLOAD = 4 comparators RLOAD 15K AVD 10 100 10 100 V/mV VOS 2 5.0 7.0 30 800 30 1000 4 10.0 12.0 30 800 30 1000 mV RLOAD =1.5K 0C TA 70C 0C TA 70C I OS 0.1 0.1 pA IB 0.1 0.1 pA 0C TA 70C VICR -0.3 V+ -1.5 -0.3 V+ -1.5 V VOL 0.18 0.4 0.18 0.4 V ISINK =12mA VINPUT =1V Differential I OL 24 60 24 60 mA VOL =1.0V I LH 0.1 20 0.1 20 nA VOH = 5.0V t RP 6.5 6.5 s RL =50K CL = 15pF 10mV Input Step/10mV Overdrive RL = 50K CL = 15pF TTL- Level Input Step 5 5 s Notes: 1 2 Consists of junction leakage currents Sample tested parameters ALD4303A/ALD4303 Advanced Linear Devices TYPICAL PERFORMANCE CHARACTERISTICS SATURATION VOL TAGE vs. TEMPERATURE 1.4 TRANSFER FUNCTION SATURATION VOLTAGE (V) 1.0 0.8 0.6 0.4 0.2 0 -55 -25 0 25 50 75 100 125 OUTPUT VOLTAGE (V) 1.2 VS = 2.5V ISINK = 50mA +6.0 TA = 25C VS = 6V RL = 50K 0.0 -6.0 -2.5 0.0 DIFFERENTIAL INPUT VOLTAGE (mV) +2.5 TEM PERATURE (C) COMMON - MODE VOLTAGE REFERRED TO SUPPL VOLTAGE Y 0.5 COMMON - MODE LIMITS (V) RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES INPUT VOLTAGE (mV) 0 V+ V+ -0.5 -1.0 0.5 V-0.5 -55 VS = 2.5V 100 VIN +2.5 + 0V V- 50K VOUT TA = 25C VS = 2.5V TTL OUTPUT VOLTAGE (V) 0.0 10mV -2.5 0 1 2 3 4 5 6 7 -25 0 25 50 75 100 125 TEMPERATURE (C) TIM E (s) SATURATION VOL TAGE vs. SINK CURRENT INPUT VOLTAGE (mV) 1.5 VS = 2.5V RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES 100 VIN V+ OUTPUT SATURATION VOLTAGE (V) 1.2 0.9 0.6 0.3 0.0 0 15 30 45 60 75 125C 85C 0 + - 50K TA = 25C VS = 2.5V VOUT +2.5 TTL 0.0 -2.5 0.0 0.1 0V V- 5mV 10mV 20mV 50mV 25C -25C -55C OUTPUT VOLTAGE (V) 0.2 0.3 0.4 0.5 0.6 0.7 OUTPUT SINK CURRENT (mA) TIM E (s) ALD4303A/ALD4303 Advanced Linear Devices TYPICAL PERFORMANCE CHARACTERISTICS TOTAL SUPPLY CURRENT vs. TOTAL SUPPLY VOLTAGE 10 V+ RESPONSE TIME FOR REPRESENTATIVE SAMPLES tdLH VS = 2.5V TA = 25C SUPPLY CURRENT ( A) RESPONSE TIME (s) 100 + TA = 25C RL = 10 5 1 0 2.0 4.0 6.0 8.0 10.0 12.0 50 100 SAMPLES 150 200 SUPPLY VOLTAGE (V) NORMALIZED INPUT OFFSET VOLTAGE vs. TEMPERATURE VCM = 0V VS = 2.5V INPUT OFFSET VOLTAGE vs. SUPPLY VOLTAGE REPRESENTATIVE SAMPLES 6 +2 +1 0 -1 -2 -3 -55 -25 0 25 50 INPUT OFFSET VOLTAGE (mV) +3 NORMALIZED INPUT OFFSET VOLTAGE (mV) 4 2 0 -2 -4 -6 TA = 25C 75 100 125 2 4 TEMPERATURE (C) 8 SUPPLY VOLTAGE (V) 6 10 12 RESPONSE TIME FOR REPRESENTATIVE SAMPLES 10 OUTPUT LOW VOLTAGE (V) 0.6 OUTPUT LOW VOLTAGE vs. SUPPLY VOLTAGE TA = 25C IOL= 12mA RESPONSE TIME (s) VS = 2.5V TA = 25C tdHL 5 0.5 0.4 0.3 0.2 0.1 0.0 0 50 100 SAMPLES 150 200 2 4 6 8 SUPPLY VOLTAGE (V) 10 12 ALD4303A/ALD4303 Advanced Linear Devices TYPICAL APPLICATIONS ZERO CROSSING DETECTOR DOUBLE QUAD LIMIT WINDOW COMPARATOR +3V +12V ALD4303 +12V VH2 +12V 50K VIN VOUT + -3V 1/4 ALD4303 50K + VH1 + +12V VIN MULTIPLE RELAY DRIVE 47K +12V + +5V VREF VIN +5V VL1 + 50K + VL2 1/4 ALD4303 ALD4303 VL1 and VH1 first limit window send warning VL2 and VH2 second limit window execute system cutoff VOLTAGE LEVEL TRANSLATOR V+ = +10V VREF VIN 50K VOUT + 1/4 ALD4303 VREF VREF = 1.4V for TTL input = V+ 2 for CMOS input Output VOUT swings from rail-to-rail ALD4303A/ALD4303 Advanced Linear Devices TYPICAL APPLICATIONS PUSH-PULL COMPLEMENTARY POWER MOSFET DRIVER +12V +12V 10K V1 VIN 40K +12V V2 R N - Channel VN 01 Power MOSFET R +12V P- Channel VP 02 Power MOSFET + 2A Source 2A Sink + R 50 K This circuit eliminates crossover current in the complementary power transistors. The outputs can be used to source and sink different loads or tied together to provide push-pull drive of the same load. 10K 1/2 ALD4303 TIME DELAY GENERATOR V+ RF1 1/4 ALD4303 V+ VREF VIN RT RF2 RELAY 3 1/4 ALD4303 + 1/4 ALD4303 RELAY 2 CT RF3 + + 1/4 ALD4303 RELAY 1 + RF4 RELAY 1 turns off followed by RELAY 2 and then RELAY 3 with fixed sequence and time delays selectrd by ratios RF1, RF2 , RF3 and RF4. Design & Operating Notes: 1. In order to minimize stray oscillation, all unused inputs must be tied to ground. 2. The input bias and offset currents are essentially input protection diode reverse bias leakage currents, and are typically less than 1 pA at room temperature. These currents are a function of ambient temperature, and would have to be considered in applications where very high source impedance or high accuracy are involved. 3. The high output sinking current of 60mA for each output offers flexibility in many applications, as a separate buffer or driver would not be necessary to drive the intended load. However, as the circuit normally operates close to ambient temperature due to its very low power consumption, thermal effects caused by large output current transients must be considered in certain applications. ALD4303A/ALD4303 Advanced Linear Devices RM |
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